AOS boot/ bellow failure?

[bcrdukes]

Originally Posted by JFP in PA

The part isn't as "fickle" as you might imagine; by far, its biggest problem is over filling the oil system in these engines. Several years ago, Porsche NA issued a tech bulletin recommending lowering the oil levels two to three bars below the full mark on the dash display, and even released recalibrated dip sticks for cars still equipped with one.

Those of us out in the field that see these cars everyday had begun lowering the oil levels slightly because we found it addressed two common problems:

1. The occasional "smokey startup" was dramatically reduced and even eliminated.
2. The life span of the AOS increased significantly.

JFP - Thanks for this.

Is there a part number for the recalibrated dip sticks? Or is this not applicable to the 986?

Update: Turns out only the boot / bellow was torn and there were signs of oil on the side. The AOS itself tested okay.